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  • 51copper — copper1 /kop euhr/, n. 1. a malleable, ductile, metallic element having a characteristic reddish brown color: used in large quantities as an electrical conductor and in the manufacture of alloys, as brass and bronze. Symbol: Cu; at. wt.: 63.54;… …

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  • 52nickel — /nik euhl/, n., v., nickeled, nickeling or (esp. Brit.) nickelled, nickelling, adj. n. 1. Chem. a hard, silvery white, ductile and malleable metallic element, allied to iron and cobalt, not readily oxidized: used chiefly in alloys, in… …

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  • 53xenon — /zee non, zen on/, n. Chem. a heavy, colorless, chemically inactive, monatomic gaseous element used for filling radio, television, and luminescent tubes. Symbol: Xe; at. wt.: 131.30; at. no.: 54. [1898; < Gk xénon, neut. of xénos strange (see&#8230; …

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  • 54capacitor dielectric and piezoelectric ceramics — ▪ ceramics Introduction       advanced industrial materials that, by virtue of their poor electrical conductivity, are useful in the production of electrical storage or generating devices.       Capacitors (capacitor) are devices that store&#8230; …

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  • 55ceramic composition and properties — Introduction       atomic and molecular nature of ceramic (industrial ceramics) materials (materials processing) and their resulting characteristics and performance in industrial applications.       Industrial ceramics are commonly understood to&#8230; …

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  • 56cobalt processing — Introduction       preparation of the metal for use in various products.       Below 417° C (783° F), cobalt (Co) has a stable hexagonal close packed crystal structure. At higher temperatures up to the melting point of 1,495° C (2,723° F), the&#8230; …

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  • 57copper processing — Introduction  use of smelting or leaching, usually followed by electrolytic refining or recovery, to turn the ore into a form from which products can be fashioned. Included in this article also is a discussion of the mining of copper and of its&#8230; …

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  • 58gold processing — Introduction  preparation of the ore for use in various products.       For thousands of years the word gold has connoted something of beauty or value. These images are derived from two properties of gold, its colour and its chemical stability.&#8230; …

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  • 59lead processing — Introduction       preparation of the ore for use in various products.       Lead (Pb) is one of the oldest metals known, being one of seven metals used in the ancient world (the others are gold, silver, copper, iron, tin, and mercury). Its low&#8230; …

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  • 60platinum group — ▪ chemical element group Introduction       six metals, in order of increasing atomic weight, ruthenium (Ru), rhodium (Rh), palladium (Pd), osmium (Os), iridium (Ir), and …

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